21630004364630 has 64 divisors (see below), whose sum is σ = 40397700672000. Its totient is φ = 8328538229760.

The previous prime is 21630004364621. The next prime is 21630004364641. The reversal of 21630004364630 is 3646340003612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1124737115 + ... + 1124756345.

It is an arithmetic number, because the mean of its divisors is an integer number (631214073000).

Almost surely, 2^{21630004364630} is an apocalyptic number.

21630004364630 is a deficient number, since it is larger than the sum of its proper divisors (18767696307370).

21630004364630 is a wasteful number, since it uses less digits than its factorization.

21630004364630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30729.

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 21630004364630 in words is "twenty-one trillion, six hundred thirty billion, four million, three hundred sixty-four thousand, six hundred thirty".